Top roll saddle



June 4, 1940. G. REPAss ET AL 2,203,419

' TOP ROLL SADPLE Filed Feb. s, 1940 umumiunuwmnmul INVENTORS. @e0/ge@epass He/f /O/e/ g A TTORN E YS.

Patented June 4, 1940 PATENT oFF-ice Y Torfaen. SADDLEl George Repass,Pawtucket, R. I., and Henry B. t Ahlberg, Attleboro, Mass., assignors`toll` 841B' Y M American Machineompany, a corporationxof Maine t VApplication February e, 1940, serial No. 317,160.. t

" momias. `(ci. isi-137) amig invention` relates" to top roll weightingmechanisms for drafting apparatus for textile bres,"and`1noreparticularly `to a new `and improved saddledevic'e for exerting pressureon top 5` rolls"`of` textileapparatus of thiswclass; and has for one oi1its `objects thearrangementof `the stirrup so that itwillibe not onlyshiltable relative tol its "supporting saddle member into differentadjusted positions, buttalsofwillbe maintained inalliadjusted"positionsagainst accidental dis"-` placementfrom` `its` supporting saddle `memberWhentlie saddle device `isi'enioved from the top rolls or during"use1Another object or the invention is theprotision of detent meanspositionable into `and out yofa position for restricting the verticalmovement of the stirrup `tolprin/entaltering` of `the position of thefulcruming member of the stiriup with respect `to itsV supporting'saddle member without` D first removing the fdetent Afrom suchdetaining position.` ,I f t Another `olcrjeot of the invention is.' theprovision ofdlocating means onboth the stirrup 'and its supportingsaddle `member for indicating thefad-` 5 justed positionofthehfulcruming `member of the stirrup on thesupportingfsaddlemember,

,p with tneseanaj other objectsgin View, the in.;

ventionconsists"`of certain novelfeatures of con`- struction, as will bemore fully described and par,`

y ticularly pointed outinthe appended claims.

NInv the accompanying" drawing; 1 is a transverse sectional view of apart of` a textile draftingapparatus `employing live`- pairs `oi.drawing rollsshowing the top rollsaddle y device of thel presentinvention applied1 thereto affldinen, Operating positionsl n 21` isalongitudinal,sectional View, on en-` larged scale, fof 'elthegimprovedtop roll saddle deviceeillustrated in Fig;` ljandshowing itsconstruction; e l Fig. 3 isa `plan View of the top rollsaddle`mechanismshownin Fig.2;a`nd i i `Figwl is a'vertical `sectionalviewtaken on the line 4-4 of Fig. 1; I T

`It is` desirable in the drafting of textile fibres that the stirrup fortransmitting a` predetermined pressure to the top rolls be notonlyadjustable into different positions relativeto its supporting saddlemember for varyingthe weighting `pressure exerted on the toprollswhenever changes in the adjustment inthe roll settings are made totake careof ldierent lengths of flibres` being worked,

but` also vthat the stirrup` befpositively retained removed from'the toprolls or during its use; and

`in order to obtain this `advantageous result, the

present invention provides a simple and improved top` rollsaddlestructure/having a stirrup with a transverse memberformed with a knifeedge or tooth `carried b-ysthe upper end portion `ofthe stirrup whichtooth tormslthe fulcruming member for the? stirrupfby having pivotalinter-engagingV relationship with a selectedaoneof a series oftransverse notches of a toothed formation on thestirrup-carrieromemberof the mechanism; and there is further provided aremovabledetent or a lbridginginember normallypositionable above and.extending across the' top of the` transverse tooth-carrying member: `oi'the f stirrupwhich detachably secures" the latter in inter-engagingpivotal erelation Within `a` desired notch in the toothed y"formationbyglrrestricting the pivotal movement of the tooth resultinglromthesidewise swinging `movement of the` stirrup fromthe verti-` cal: andthere isfurth'er provided means for indicating the particulars@ notch ofthe.` toothedV formation within which the tooth fulcrurningv the stirrupon its supporting saddle member is positioned';` and the :followingv isamore detaileddescription'ofthepresent'embodiment of this invention,illustrating the' `preferred 'means by which these advantageous `resultsmay be accomplishedz I" li' 't 1 With reference to Ithe drawing,Lwhereinthe embodiment of the inventionselected for illustration'isshownlin Figs. lto'l as beingapplied to ateXtile apparatuslemployingtiive pairs of `upper and-'lower drawing` rolls'tl `designatesthe usual` roller` beamora` part `ofthe frame of aspinning frame,drawing iframe,` roving frame and the like, on which is supported theroll stands I2 with the lower drawinglrolls` I3, M, I5, I6 and I1 andtheir cooperating-toprolls I8,` I9, 2li, 2l, and 122 respectively. "Theroll standsl21are of similar` construction and, asillustrated inwFig.Leach consists oi' askeleton-like, frame liaving a `base t 25 from whichextendsupwardlythe two arms 26 and 421 which arejoined `togetherat'their upper ends by atransverse member28 upon lwhich there is.adjustably f mounted for` sliding` movementl f thereon the slide 30 onwhich lisjournaled the material, tand. supported` by their cooperatinglowerF rolls while being 5 demountably j OurnaIed hungy the weight strap43 for sustaining the weight 45.

The top roll saddle mechanism comprising the present invention comprisesa front saddle 50, a stirrup-carrier 5| having an elongated rearwardlyextending shank 52 and pivoted to an upright portion 53 on the frontsaddle as indicated at l54, and a back saddle 55 provided with thefulcrum member 56 within the split. eye 51 having a fulcrumingengagement with the undersurface of the elongated shank 52 of thestirrup-carrier 5|.

The front saddle 56 is adapted to engage and bear upon the twointermediate top rolls I9 and 20. The back saddle 55 is adapted toengage and bear upon the back top roll 22 and the intermediate top roll2| and is shiftable along the shank 52, and also may be reversed in itsposition thereon whenever desired so as to alternately straddle eitherone of the top rolls 2| or 22.

f The front saddle 50 and the back saddle 55 may be provided withsuitable groovesin their'upper side whichl receive lubricating wickingwhose ends extend through holes at the bearing portions of the saddleswith the top rolls to conduct oil thereto. as is well known constructionin the art.

f The outer or free end of the shank 52 may beA provided with a suitableenlarged headed portion adjacent to and in advance of which is arecessed part for admission of the fingers of the split eye 51 to allowthe positioning orl removal of the back saddle 55 into an operativerelation on the shank 52 by relative rotary and sliding movementthereto, such constructions being old and well known as shown in theDixon patents, Nos. 1,265,306 and 1,265,307 granted May 7, 1918.

The top portion of the stirrup-carrier l5| is re` cessed as at in* whichrecess is suspended the deected upper end portion 6| of the stirrup 62.The upper deflected end portion`6| of the stirrup is bifurcated to formtwo spaced arms 63 and 64 connected together at their outer ends by atransverse rib member 65, the front saddle 5U and the stirrup-carrier 5|being disposed in the space 66 between the arms 63 and 64 during thepivoted movement of the stirrup on the transverse tooth 61on theunderside of the-cross member 65 having inter-engagement with anyselected one' of a series of notches68 of the toothed formation providedin the bottom of the recess 60.

The top surface of the transverse rib member 65 is formed withv a convexsurface 16 of a contour suchv that when the stirrup is swung iromthevertical position into the dotted'position 62a, as indicated in Fig. 2,in an attempt to disengage the tooth 61 from inter-engagement with thedesiredfnotch'68 of the toothed formation will cause the convex surface10 to beelevated' sufficiently to cause it to engage the underside ofthe bridging .member or detent 1| Ywhich is demiountably positionedabove the transverse rib 65 of the stirrup and extends acrossV the topopening of the recess 60 thereby acting to restrict the upward movementof the stirrup relative to its supporting saddle member andgto retainthe tooth 61 in its inter-engaging pivotal relationship with theselected notch 68 of the toothed formation within which it is located ina desired adjusted. lposition'.v

The top surface of the bridging member 1|' is shown in Fig. 2 as beingsubstantially flush with land forming an extension of the generalcurviytongue 14 at the opposite end of the bridging member 1| nsertablewithin a groove 15 in the adjacent side wall of the stirrup-carrier 5Iholds this end of the bridging member in position connected to thecarrier 5| and against vertical movement.

The ylowerend `of the stirrup 62 is provided with a b-ifurcateddeflected portion 16, as shown in Fig. 4., which is pivotally connectedas by a pin 11 to the weighted lever k18. An upstanding fulcrum eye onanslide 8|I pivotally sustains the weighted lever 18 in a hingedrelation with respect to the slide. beam `Ill and adjustabletransversely thereof by means of the clamping bolt 82detachablyconnected to the roller' beam and passing through the slot 83in the slide. A weight 85 suspended from the free end of the Weightlever 18 by means of a strap 86 serves to exert the desired pressure` tobe transmitted by the stirrup 62 to thetop roll saddle mechanism.

To locate and position the tooth 61 in anyfselected one ofthe series ofnotches 68 there is provided on the top surface of the bridging member1I v adjacent its longitudinal side edges a series oftransversegraduations or markings!!! with reon the bridging member1| areso spaced that the distances between adjacent markings correspond to thelinear` distances between the notches 68 of. the toothed formationdesignated by such markings. Asillustrated in Fig. 2 each marking `9|)is disposed vertically above the particular notch 68 of the toothedformation designated by the marking.

In accordance with the foregoing construction of the saddle device ofthelpresent invention, the

tooth-carrying member of. thestirrup is confined within the recess inthe top portion of the stirrupcarrying member ofthe saddle and inpositively locked inter-engagement` with a selected one ofthe series ofnotches of the toothed formation' on the stirrup-supporting member ofthe saddle device, thus limiting the pivotal movement of the tooth insaid toothed formation. The separation of the stirrup fromits supportingsaddle member and/or the adjustment of the stirrup on the sameY is alsoprevented and 'cannot be eiected without rst either removing `orloosening the connection of the bridging member sufliciently from thestirrup-carrier to permit sufficient vertical movement of the stirrup toeffect separation of the' tooth of the stirrup from the toothedformation of the stirrup-carrier to enable the stirrup to Vbe.V

The bridging member 1| may The slide 8| is supported by the roller vshifted `along the latter for positioning the tooth into anotherselected one of the `notches of the toothed formation.

The present invention is not to be limited to the foregoing illustratedand described embodii ment of a saddle for a five-roll drafting systemas it is to be understood that itmay be embodied in various other formsof toproll saddle constructions for use in three and four-roll draftingsystems without departing from `the spirit of the invention. We desireit to be understood that we reserve the privilege of resorting to allthe mechanical changes to which the device is susceptible, the inventionbeing definedand limited only bythe terms of the appended claims.

We claim: y l. In a top roll saddle mechanism, a front saddle, astirrup-supporting member associated with saddle having an upper endportion provided` said saddle provided with a toothed formationpresenting a series of transverse notches within any of which aweightstirrup can beselectively positioned and hung, a weight stirrupfor said with a transverse tooth having a fulcruming engagement within aselected notch of said toothed formation, and means positionable withrespect to said upper end portion of the stirrup whereby in one positionof said means the upward movement of the stirrupwill be restrictedrelative to its supporting saddle member so as to prevent separation ofsaid tooth from inter-engagement with a selected notch of said toothedformation when the stirrup rests in a desired adjusted position.

2.` In a top roll saddle mechanism, a front saddle,` astirrup-supporting member associated with said saddle provided with atoothed formation presenting a series of transvese notches within any ofwhich a weight stirrup can be selectively positioned and hung, a weightstirrup for said saddle having an upper end portion provided with atransverse tooth having a fulcruming engagement within a selected notchof said toothed` When said means is removed from its stirrup--restricting position thereon the vertical movement and longitudinaladjustment of the stirrup will be permitted whereby said tooth will beengaged into any of the other notches of the toothed formation. i

3. In a top roll saddle mechanism, a back saddle, a front saddle havinga stirrup-supporting member in fulcruming engagement with the backsaddle, a stirrup suspended from said stirrupsupporting member of thefront saddle, the upper end of said stirrup being provided with aportion having a tooth pivotally engaging a notch of a toothed formationprovided on said stirrupsupporting member of the front saddle, and meansdemountable on said stirrup-supporting member arranged above saidtooth-carrying portion of the stirrup to be engaged by the same andlimit the pivotal movement of the tooth Within the selected notch ofsaid toothed formation against vertical movement to an extent sufficientto effect separation of the parts for the positioni ing of the stirrupto rest in a different notch of said toothed formation.

4. In a top roll saddle mechanism, a back saddle, a front saddle, astirrup-carrier pivoted to said front saddle and having a fulcrumingengagement with the back saddle, a stirrup hung from saidstirrup-carrier havinga deiiected upper end engaging the stirrup-carrierand shiftable therealong, said deflected upper end of the stirrup beingprovided with a tooth pivotally engaging a toothed formation upon thestirrupcarrier in all adjusted positions of the stirrup with respect tothe stirrup-carrier, and means detachably arranged on saidstirrup-carrier at a location for retaining the tooth of the stirrup ininter-engaging pivotal relationship with the toothed formation of thestirrup-carrier against vertical movement of the `stirrup relative tothe stirrup-carrier.

5. In `a top roll saddle mechanism, a back saddle, a front saddle, astirrup-carrier provided with a recessed portion andpivoted to saidfront saddle and having a fulcruming engagement with the back saddle, astirrup hung from said stirrup-carrier having a deiiected upper endengaging the stirrup-carrier and shiftable therealong, said deflectedupper end of the stirrup being provided with a `tooth pivotally engaginga toothed formation within the recessed portion of the stirrup-carrierinl all adjusted positionsv of the stirrup with respect to thestirrup-carrier, and means detachably arranged on said stirrupcarrier ata location for retaining the tooth of thestirrup in inter-engagingpivotal relationship with the toothed formation of the stirrupcarrieragainst vertical movement of the stirrup relative to thestirrup-carrier.

6. In a top roll saddle mechanism, a back saddle, a front saddle, astirrup-carrier pivoted to said front saddle and having `a iulcrumingenm gagement with the back saddle, a stirrup hung from saidstirrup-carrier having a deflected upper end' engaging the`stirrup-carrier and shiftable therealong, said deilected upper end ofthe stirrup being provided with a tooth pivotally engaging a toothedformation upon the stirrupcarrier in all adjusted positions of thestirrupcarrier with respect to the stirrup-carrier, `and meanspositioned above and extending across said recess on saidstirrup-carrier at a location for retaining the tooth of the stirrup ininter-engaging pivotal relationship with the toothed formation of thestirrup-carrier against vertical movement of the stirrup relative to thestirrup-carrier.

7. In a top roll saddle mechanism, a back saddle adapted to rest upontwo top rolls, a front saddle adapted to rest upon two top rolls, astirrupcarrier pivotedto said front saddle and having a fulcrumingengagement with the back saddle, a

stirrup hung from said stirrup-carrier having a deflected upper endengaging the stirrup-carrier and shiftable therealong, said deflectedupper end of the stirrup being provided with a tooth pivotally engaginga toothed formation` upon the stirrup-carrier in all adjusted positionsof the stirrup with respect to the stirrup-carrier, and meansdetachablyarranged on said stirrup-arrier at a location for retainingthetooth of the stirrup in inter-engaging pivotal relationship with thetoothed formation of the stirrup-carrier against vertical movement ofthe stirrup relative to the stirrup-carrier.

8. In a top roll saddle mechanism, a back saddle, a front saddle, astirrup-carrier pivoted to said front saddleand having a fulcrumingen-l` gagement with the back saddlea stirrup hung from saidstirrup-carrier having a deiiected upper end engaging thestirrup-carrier and shiltable therealong, said deiiected upper end ofthe stirrup being provided With a tooth pivotally engaging a toothedformation upon the stirrup-carrier in all adjusted positions of thestirrup with respect to the Stirrup-Carrier, and means detachablyarranged on said'stirrup-carrier at a location for retaining the toothof the stirrup in inter-engaging pivotal relationship with the toothedformation of the stirrup-carrier against vertical movement of thestirrup relative to the stirrup-carrier, and en means for indicating theposition of said tooth of the stirrup with respect to a selected notchin which the tooth rests in said toothed formation.

9. In a top roll saddle mechanism, aback saddle, a iront saddle, astirrup-carrier pivotedl to said front saddle and having a ulcrumingengagement with the back saddle, a stirrup hung from saidstirrup-carrier having a deflected upper end engaging thestirrup-carrier and shiftable therealong, said deflected upper end ofthestirrup being provided with a tooth pivotally engaging a toothedformation upon the stirrupcarrier in all adjusted positions of thestirrup with respect to the stirrup-carrier, and means detachablyarranged on said stirrup-carrier at a location for retaining the toothof the stirrup in inter-engaging pivotal relationship with the toothedformation of the stirrup-carrier against vertical movement of thestirrup relative to the stirrup-carrier, and indicator markings on saidstirrup bearing a xed linear relationship thereon with respect to theposition of the tooth of the stirrup adapted to be brought into registrywith a selected one of a series of spaced indicatory iiected 'upper end'engagingy the stirrup-carrer and shiftable therealong, `said deiiectedupper end oi the'stirrup being provided with a trans-l` verse memberhaving .a tooth pivotally engaging a selected one of a series of notchesof a toothed formation yupon the stirrup-carrier in all adjustedpositions of the stirrup with respect to the stirrup-carrier, and adetent member detachably arat a locationv thereon above and crosswise ofsaid transverse ranged on said stirrup-carrier member of the stirrup forretaining the tooth of the stirrup in inter-engaging pivotalrelationship within the toothed formation of the stirrupcarrier againstvertical movementof the stirrup relative to the stirrup-carrier sucientto effect separation of said pivot parts, the top portion of' saidtransverse member of the stirrup being' formed with a convex surface soshaped as to engage the undersurface of the detent member upon pivotalmovement of thestirrup in a direc-- tion to raise the transverse memberwhereby separation of the tooth of the stirrup from the notch of thestirrup-carrier into which it rests is prevented.

` GEORGE REPASS.

HENRY B. AHLBERG?.y

